Audio compression icon for a portion of a computer screen



FIG. 1 is a front perspective view of an audio compression icon for a portion of a computer screen showing our new design; and,

FIG. 2 is a front perspective view of a second alternative embodiment of an audio compression icon for a portion of a computer screen showing our new design.

The broken line drawing of an undefined portion of a computer screen in both views is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an audio compression icon for a portion of a computer screen, as shown and described. 